You can add your clan symbol to your title by simply inserting %s where you want it to appear, if your symbol is coloured then your own title colour will be used for the remainder of your title after the symbol.
e.g.
> title I r peon of %s so be respectful
[1 1 1 1] Jimbob I r peon of {SLAVERS} so be respectful
What this means is that you don't ahve to remember the correct format of your symbol, also the clan leader can change the symbol and yours will update as well.